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Leases - Disclosure Of Quantitative Information About Right Of Use Assets (Detail) - CNY (¥)
¥ in Thousands
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Disclosure of quantitative information about right-of-use assets [line items]      
Opening net book amount ¥ 973,547    
Depreciation charge (608,889) ¥ (604,018) ¥ (509,026)
Closing net book amount 804,990 973,547  
Right-of-use assets [member]      
Disclosure of quantitative information about right-of-use assets [line items]      
Opening net book amount 973,547 914,960 740,240
Additions 501,663 697,403 683,746
Early termination (61,331) (34,798)  
Depreciation charge (608,889) (604,018) (509,026)
Closing net book amount 804,990 973,547 914,960
Cost [member] | Right-of-use assets [member]      
Disclosure of quantitative information about right-of-use assets [line items]      
Opening net book amount 1,810,222 1,731,022  
Closing net book amount   1,810,222 1,731,022
Accumulated depreciation | Right-of-use assets [member]      
Disclosure of quantitative information about right-of-use assets [line items]      
Opening net book amount ¥ (1,005,232) (757,475)  
Closing net book amount   ¥ (1,005,232) ¥ (757,475)